package com.kkw.shoppingmall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.kkw.common.constant.ProductConstant;
import com.kkw.common.utils.PageUtils;
import com.kkw.common.utils.Query;
import com.kkw.shoppingmall.product.dao.AttrAttrgroupRelationDao;
import com.kkw.shoppingmall.product.dao.AttrGroupDao;
import com.kkw.shoppingmall.product.dao.CategoryDao;
import com.kkw.shoppingmall.product.entity.AttrAttrgroupRelationEntity;
import com.kkw.shoppingmall.product.entity.AttrGroupEntity;
import com.kkw.shoppingmall.product.entity.CategoryEntity;
import com.kkw.shoppingmall.product.service.CategoryService;
import com.kkw.shoppingmall.product.vo.AttrGroupRelationVo;
import com.kkw.shoppingmall.product.vo.AttrRespVo;
import com.kkw.shoppingmall.product.vo.AttrVo;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.kkw.shoppingmall.product.dao.AttrDao;
import com.kkw.shoppingmall.product.entity.AttrEntity;
import com.kkw.shoppingmall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Slf4j
@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    private AttrAttrgroupRelationDao attrAttrgroupRelationDao;

    @Autowired
    private AttrGroupDao attrGroupDao;

    @Autowired
    private CategoryDao categoryDao;

    @Autowired
    private CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        this.save(attrEntity);

        //保存关联关系
        if (attr.getAttrType()== ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()&&attr.getAttrGroupId()!=null){
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationEntity.setAttrId(attrEntity.getAttrId());
            attrAttrgroupRelationDao.insert(attrAttrgroupRelationEntity);
        }

    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId,String attrType) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("attr_type","base".equalsIgnoreCase(attrType)
                ?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (catelogId != 0) {
            queryWrapper.eq("catelog_id",catelogId);
        }
        String key = (String) params.get("key");
        if (StringUtils.isNotBlank(key)){
            queryWrapper.and((obj)->{
                obj.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        PageUtils pageUtils =null;
        try {
            IPage<AttrEntity> page = this.page(
                    new Query<AttrEntity>().getPage(params),
                    queryWrapper
            );
            pageUtils = new PageUtils(page);
            List<AttrEntity> records = page.getRecords();
            List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
                AttrRespVo attrRespVo = new AttrRespVo();
                BeanUtils.copyProperties(attrEntity, attrRespVo);
                if ("base".equalsIgnoreCase(attrType)){
                    //1/设置分类和分组的名字
                    AttrAttrgroupRelationEntity attrId = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                    if (attrId != null &&attrId.getAttrGroupId()!=null) {
                        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                        attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                    }
                }

                CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
                if (categoryEntity != null) {
                    attrRespVo.setCatelogName(categoryEntity.getName());
                }
                return attrRespVo;
            }).collect(Collectors.toList());
            pageUtils.setList(respVos);
        }catch (Exception e){
            e.printStackTrace();
        }

        return pageUtils;

    }

    @Cacheable(value = "attr",key = "'attrinfo:'+#root.args[0]")
    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, respVo);

        // 基本类型才进行修改
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //1、设置分组信息
            AttrAttrgroupRelationEntity attrgroupRelation = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if (attrgroupRelation != null) {
                respVo.setAttrGroupId(attrgroupRelation.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());
                if (attrGroupEntity != null) {
                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }

        //2、设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        respVo.setCatelogPath(catelogPath);

        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            respVo.setCatelogName(categoryEntity.getName());
        }
        return respVo;
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        this.updateById(attr);

        AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
        relationEntity.setAttrGroupId(attr.getAttrGroupId());
        relationEntity.setAttrId(attr.getAttrId());
        Integer count = attrAttrgroupRelationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
        // 基本类型才进行修改
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            if (count>0){
                //1、修改分组关联

                attrAttrgroupRelationDao.update(relationEntity,new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attr.getAttrId()));

            }else {
                attrAttrgroupRelationDao.insert(relationEntity);
            }
        }

    }

    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = entities.stream().map((attr) -> attr.getAttrId()).collect(Collectors.toList());
        // 根据这个属性查询到的id可能是空的
        if(attrIds == null || attrIds.size() == 0){
            return null;
        }
        return this.listByIds(attrIds);
    }

    /**
     * 获取当前分组没有关联的所有属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        // 2、当前分组只能关联别的分组没有引用的属性																									并且这个分组的id不是我当前正在查的id
        //2.1)、当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        // 得到当前分类下面的所有分组id
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2)、查询这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        // 再次获取跟这些分组有关的属性id的集合
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3)、从当前分类的所有属性中移除这些属性；[因这些分组已经存在被选了 就不用再显示了]
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds != null && attrIds.size() > 0){
            wrapper.notIn("attr_id", attrIds);
        }
        // 当搜索框中有key并且不为空的时候 进行模糊查询
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        // 将最后返回的结果进行封装
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);
        return pageUtils;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        //不使用这个单个删除 而是使用批量删除
//        attrAttrgroupRelationDao.delete(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",1L).eq("attr_group_id",1L))

        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        attrAttrgroupRelationDao.deleteBatchRelation(entities);
    }

    /**
     * 在指定的所有属性集合里面，挑出检索属性
     * @param attrIds
     * @return
     */
    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
       return this.baseMapper.selectSearchAttrIds(attrIds);

    }

}